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    Gateway

                                                      A gateway is a network device that allows the data to flow between
                                                      two different networks which may use different protocols. It
                                                      collects data that is to be sent from one computer, converts it into
                                                      small packets and then sends them to another computer. As the
                                                      name suggests, it is a hardware device that acts as a gate between
                                Gateway
                                                      two networks. Unlike routers, gateways are used to connect two
                      dissimilar networks in the same area. Thus, it is used to make communication possible between
                      the networks with different architectures (this defines how devices are connected) and protocols
                      (these are rules that govern how devices interact).

                            TYPES OF NETWORKS

                      Different types of networks can classified on the basis of geographical areas covered. There are
                      five types of networks as follows:

                      LAN (Local Area Network)                                                    Workstation

                      LAN is a short  form of Local Area  Network.  It is a digital
                      communication system  that interconnects  a larger number
                      of computers and other peripheral devices within a radius of
                      less than 1 km. This type of network is usually preferred for a
                      smaller area such as a residence, school, laboratory, university
                      campus or office building. By using the LAN network, users can
                      exchange data and messages in the easy and fast way. Cables
                      and communication devices are used to connect computers                                      Server
                      to the LAN.                                                                  Local Area Network

                      MAN (Metropolitan Area Network)

                      This network consists of  two or more local area networks together that usually spans several
                      buildings in the same city or town.

                                                 LAN                                        LAN

                                                            Metropolitan Area Network
                      WAN (Wide Area Network)

                      A Wide Area Network (WAN) covers a very large area such as a country or continent. This type
                      of network is used to connect computers at various cities in a country or across the world.

                     10     Premium Edition-VIII

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